IBM CD-RW/DVD Combo Drive for Thinkpad R30, R31, R32, R40/e, T20, T21, T22, X20 A20, A21,A22 Series IBM CD-RW/DVD Combo Drive for THINKPAD A,T,R,Series Thinkpad R30, Thinkpad R31, Thinkpad R32, Thinkpad R40/e, Thinkpad T20, Thinkpad T21, Thinkpad T22, Thinkpad X20.Thinkpad A20, Thinkpad A21,Thinkpad A22,Series